Synthesis and optical properties of novel Gd^(3+)-doped BaZn_(2)(PO_(4))_(2)glass-ceramics for radiation detection applications  

作　　者：Wanli Li Zhaoyang Chen Jie Xu Pengjun Zhao Yanwei Fan Chengfa He 

机构地区：[1]Key Laboratory of Functional Materials and Devices for Special Environments of CAS,Xinjiang Key Laboratory of Electronic Information Materials and Devices,Xinjiang Technical Institute of Physics&Chemistry of CAS,Urumqi 830011,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China [4]Laboratory of Solid-State Radiation Physics,Urumqi 830011,China

出　　处：《Journal of Rare Earths》2022年第12期1927-1934,I0005,共9页稀土学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(11675260)。

摘　　要：45 P_(2)O_(5)-15 BaO-25 ZnO-15 B2O_(3)glasses doped with different concentrations(0 mol%,0.1 mol%,0.25 mol%,0.5 mol%,and 0.75 mol%)of Gd^(3+)were prepared by a melt-quenching method and treated to fabricate glass-ceramics containing BaZn_(2)(PO_(4))_(2)crystals by controllable crystallization.The structural,optical,and dosimetric properties were investigated.FTIR spectra indicate that the glasses are composed of[PO_(4)],[BO_(3)],and[BO_(4)]basic structural units.The XRD pattern analysis indicates that the samples contain BaZn_(2)(PO_(4))_(2)crystals.In the photoluminesce nce(PL)spectra,two emission bands are observed at 307 and 313 nm due to the^(6)P_(5/2)→^(8)S_(7/2)and^(6)P_(7/2)→^(8)S_(7/2)transitions of Gd^(3+),respectively.The OSL dosimetric properties of glass-ceramics were studied further under beta radiation of90Sr.The optimal Gd^(3+)doping concentration of 0.5 mol%was determined.The fading of the OSL signal shows that the CW-OSL signal of Gd^(3+)-doped BaZn_(2)(PO_(4))_(2)glass-ceramics decays by about 58.95%within120 h,and the intensity remains stable thereafter.The thermoluminescence(TL)curve has three peaks at 164,240,and 344℃.Minimum detectable dose(MDD)of the 0.5 mol%Gd^(3+)-doped BaZn_(2)(PO_(4))_(2)glass-ceramics was calculated as 0.675 mGy.The samples also exhibit good signal reusability and a broad linear dose-response range(0.3-500 Gy).Results show the excellent dosimetric properties of Gd^(3+)-doped BaZn_(2)(PO_(4))_(2)glass-ceramics and their potential application in radiation dosimetry.

关 键 词：GLASS-CERAMICS PHOTOLUMINESCENCE Continuous wave-optically stimulated luminescence THERMOLUMINESCENCE Radiation dosimetry Rare earths 

分 类 号：TQ171.733[化学工程—玻璃工业]